According to the Railroad Commission of Texas, which keeps track of the top oil and gas producers in the state, the top companies include:
- Anadarko E&P Onshore LLC
- Apache Corporation
- BP America
- Burlington Resources O & G Co. LP
- Chesapeake Operating L.L.C.
- Chevron USA Inc.
- Cimarex Energy Co.
- COG Operating LLC
- Devon Energy Production Co., L.P.
- Diamond Back E&P LLC
- Endeavor Energy Resources L.P.
- EOG Resources, Inc.
- Lewis Petro Properties, Inc.
- Marathon Oil EF LLC
- Occidental Permian LTD.
- Ovintiv USA Inc.
- Parsley Energy Operations, LLC
- Pioneer Natural Res. USA, Inc.
- Rockcliff Energy Operating LLC
- TEP Barnett USA, LLC
- XTO Energy Inc.